Lucas T.

Lucas T.

Senior Software Engineer

São Paulo, Brazil
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About Me

Lucas has 8+ years of experience developing performant, concise back-end applications and usable, minimalist front-end solutions for clients. He specializes in Python, Java, and React/JavaScript to build back-end business logic, design services, and data layers of applications. Lucas is a strong advocate of mentoring young engineers, sharing best practices, and promoting the best technical solutions on client projects.

Work history

UpStack
UpStack
Senior Full-stack Engineer
2018 - Present (7 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Karat
Karat
Interview Engineer
2021 - Present (4 years)
Remote
  • Conducting technical interviews, mentoring 900+ interview engineers, and training new engineers.

  • Revising interviews conducted by other engineers as part of the Quality Control’s Mentor Team.

  • Conducted 500+ technical interviews.

Full Stack DevelopmentInterviewing Mentorship Technical Training Quality Control
Avanoo
Avanoo
Software Engineering Manager | Director Of Engineering
2018 - 2022 (4 years)
Remote
  • Led the entire software engineering team, including Platform, Infrastructure, and Data Science.

  • Led the migration of main platform features to a new front-end architecture using React/TypeScript.

  • Created a data engineering framework for future Data Science initiatives.

  • Developed the company's IaC architecture using Terraform, optimized the front-end build pipeline, and built the platform's CI/CD workflow.

  • Built a serverless architecture using AWS services (Lambda, SQS, SNS) and the Serverless framework.

  • Led the back-end development using Ruby on Rails, MySQL, and Elasticsearch to maintain the platform and to create admin-focused data visualization features.

React TypescriptLeadershipData ScienceGoMicroservicesInfrastructure as Code (IaC) TerraformCI/CD AWS ServerlessAWSAWS SNSAWS Lambda AWS SQSRuby on RailsMySQLElasticsearch Data VisualizationBack-end Development
Freelance
Freelance
Senior Full-stack Engineer
2017 - 2018 (1 year)
Remote
  • Augmented and tuned a new Data Science solution to assist a large agricultural producer with irrigation planning processes.

  • Built a robust reporting and monitoring infrastructure using Machine Learning algorithms, processing historical, geographic, and meteorological data for the system.

  • Developed web and mobile dashboard platforms to visualize the results of the irrigation planning system.

Petrobras
Petrobras
Full-stack Engineer
2012 - 2017 (5 years)
Rio de Janeiro, Brazil
  • Steered the architecture system for a financial dashboard that integrated with 20+ internal and external applications.

  • Provided input and support for the development of an application to automate the estimation of new technology contracts (the solution crossed information from previous bidding processes with external sources of information to generate new estimations).

  • Developed a next-gen application to manage the operational costs of offshore and onshore production platforms, combining features of the two existing solutions for efficiency.

Cetip
Cetip
Software Engineer
2009 - 2012 (3 years)
São Paulo, Brazil
  • Improved the performance, scalability, and reliability of a new version of the swap and currency forward contracts applications, both types of financial instruments with billions of transactions per year.

  • Developed and managed a high-performance derivative financial instrument application, previously built with legacy technologies, and supervised the whole change process.

  • Developed and executed improvements to existing systems and created new ones for optimum efficiency.

Portfolio

Full-stack Engineer - Irrigation Planning
Full-stack Engineer - Irrigation Planning

Used the company’s historical data and meteorological forecasts to decide which parts of the company’s production areas should be irrigated. The solution reduced the usage of water by 28% during the first three months of 2018. Built the stream architecture to enable real-time update of the information on the system.

Full-stack Engineer - Board of Directors’ Financial Dashboard
Full-stack Engineer - Board of Directors’ Financial Dashboard

Built the messaging architecture that enabled communication with other services. Developed and managed the integration with SAP applications. Designed the authentication features of the solution including a two-factor biometric requirement.

Back-end Engineer | Machine Learning Engineer - Technology Contracts
Back-end Engineer | Machine Learning Engineer - Technology Contracts

Developed a Machine Learning algorithm responsible for generating estimations. The solution reduced in 55% the deviance between internal estimations and the business proposals. Conducted several seminars for other company divisions and pitched the solution to the Information Technology Secretary of Brazil’s Federal Government to show him how the government can use Data Science for public contracts.

Back-end Engineer - Production Platforms Operational Cost
Back-end Engineer - Production Platforms Operational Cost

Built the service architecture responsible for synchronizing information with all production platforms and enabling offline activity. Developed the accounting feature that integrated the systems with the company’s annual planning process. The application generated approximately $2.5M savings per year, benefiting over 100,000 active users.

Back-end Engineer - Pre-Salt Logistic Planning
Back-end Engineer - Pre-Salt Logistic Planning

Built an algorithm responsible for scoring logistic scenarios. Developed all features related to pipe infrastructure planning. The projects using this solution generated more than $20B in revenue for the company in 2017.

Back-end Engineer - Derivative Financial Instruments
Back-end Engineer - Derivative Financial Instruments

Built a feature responsible for syncing all financial institutions at the end of each working day regarding new financial instruments. The new applications were deployed without downtime or any negative repercussions to the company.

Education

BSc Information Technology
BSc Information Technology
Pontificia Universidade Catolica do Rio de Janeiro - Brazil
2007 - 2010 (3 years)